Walgreens is suing Theranos for $140 million in Delaware

Walgreens has filed a lawsuit against blood analysis company Theranos. Walgreens was once Theranos’ biggest partner and the startup used several of the drugstore chain’s Arizona store locations as testing sites. However, Walgreens formally severed ties with the startup in June, citing the myriad bad test results and a federal investigation as the reason for ending the…